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