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)(20,27)(21,29)(22,23)(24,31)(26,28)(30,32)(33,34,38,41)(35,39,44,37)(36,40,46,48)(42,47,43,45)(1,2,6,10)(3,7,8,4)(5,9,14,16)(11,15,13,12)(18,23)(20,25)(24,29)(28,32)(33,35,38,44)(34,39,41,37)(36,43,46,42)(40,45,48,47)(17,19)(18,20)(21,26)(22,27)(23,25)(24,28)(29,32)(30,31)(33,36)(34,40)(35,42)(37,45)(38,46)(39,47)(41,48)(43,44) involution — undirected(1,3)(2,7)(4,10)(5,13)(6,8)(9,12)(11,14)(15,16)(17,19)(18,20)(21,30)(22,27)(23,25)(24,32)(26,31)(28,29)(33,36)(34,40)(35,43)(37,47)(38,46)(39,45)(41,48)(42,44) involution — undirected(1,4,6,7)(2,8,10,3)(5,12,14,15)(9,13,16,11)(17,20)(18,19)(21,28)(22,25)(23,27)(24,26)(29,30)(31,32)(33,35)(34,37)(36,42)(38,44)(39,41)(40,45)(43,46)(47,48)(1,5,6,14)(2,9,10,16)(3,11,8,13)(4,12,7,15)(17,21,22,31)(18,24,23,29)(19,26,27,30)(20,28,25,32)(33,37)(34,35)(36,45)(38,39)(40,42)(41,44)(43,48)(46,47)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.