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