One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,13)(5,9)(7,10)(8,12)(11,16)(14,15)(17,18,23,21)(19,26,24,20)(22,29,31,25)(27,28,32,30)(33,34)(35,38)(36,41)(37,42)(39,43)(40,45)(44,47)(46,48)(1,3)(2,6)(4,5)(7,11)(8,14)(9,13)(10,16)(12,15)(17,19)(18,20)(21,26)(22,27)(23,24)(25,28)(29,30)(31,32)(33,35)(34,40)(36,42)(37,44)(38,43)(39,45)(41,48)(46,47) involution — undirected(3,11)(4,12)(6,16)(8,13)(17,20,23,26)(18,24,21,19)(22,30,31,28)(25,27,29,32)(33,36,39,47)(34,41,43,44)(35,42,45,46)(37,40,48,38)(1,4)(2,8)(3,5)(6,14)(7,12)(9,16)(10,13)(11,15)(17,20)(18,19)(21,24)(22,28)(23,26)(25,27)(29,32)(30,31)(33,37,39,48)(34,42,43,46)(35,44,45,41)(36,38,47,40)(1,5)(2,9)(3,12)(4,11)(6,8)(7,15)(10,14)(13,16)(17,21,23,18)(19,26,24,20)(22,29,31,25)(27,30,32,28)(33,38)(34,35)(36,37)(39,40)(41,42)(43,45)(44,46)(47,48)(1,6)(2,3)(4,14)(5,8)(7,16)(9,12)(10,11)(13,15)(17,22,23,31)(18,25,21,29)(19,27,24,32)(20,28,26,30)(33,35)(34,38)(36,46)(37,44)(39,45)(40,43)(41,48)(42,47)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.