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