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