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