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