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