One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,13)(5,9)(6,10)(8,12)(11,16)(14,15)(17,18)(19,21)(20,25)(22,26)(23,27)(24,30)(28,31)(29,32)(33,34)(35,43)(36,47)(37,41)(38,42)(39,46)(40,45)(44,48) involution — undirected(1,3,6,11)(2,7,10,16)(4,5,12,15)(8,14,13,9)(17,19)(18,24)(20,28)(21,27)(22,29)(23,30)(25,26)(31,32)(33,35)(34,39)(36,44)(37,45)(38,46)(40,48)(41,47)(42,43)(3,11)(4,12)(7,16)(8,13)(17,20,23,29)(18,25,27,32)(19,28,30,22)(21,31,24,26)(33,34,38,42)(35,39,46,43)(36,40,45,47)(37,41,44,48)(1,4)(2,8)(3,5)(6,12)(7,14)(9,16)(10,13)(11,15)(17,20)(18,25)(19,28)(21,31)(22,30)(23,29)(24,26)(27,32)(33,34)(35,43)(36,40)(37,48)(38,42)(39,46)(41,44)(45,47) involution — undirected(1,2)(3,7)(4,8)(5,14)(6,10)(9,15)(11,16)(12,13)(17,21,23,24)(18,19,27,30)(20,31,29,26)(22,25,28,32)(33,36)(34,40)(35,44)(37,46)(38,45)(39,48)(41,43)(42,47)(1,5)(2,9)(3,12)(4,11)(6,15)(7,8)(10,14)(13,16)(17,22,23,28)(18,26,27,31)(19,29,30,20)(21,32,24,25)(33,37,38,44)(34,41,42,48)(35,45,46,36)(39,47,43,40)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.