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