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