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