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