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