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