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)(33,34,38,42)(35,36,40,39)(37,45,47,41)(43,48,46,44)(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(15,16)(17,19,23,30)(18,24,22,27)(20,28,29,21)(25,32,31,26)(33,35)(34,36)(37,43)(38,40)(39,42)(41,44)(45,48)(46,47)(2,6)(3,9)(4,12)(14,16)(18,22)(20,29)(21,28)(24,27)(33,35,38,40)(34,39,42,36)(37,46,47,43)(41,44,45,48)(1,2)(3,10)(4,8)(5,6)(7,9)(11,16)(12,13)(14,15)(17,20)(18,25)(19,28)(21,30)(22,31)(23,29)(24,32)(26,27)(33,35)(34,36)(37,43)(38,40)(39,42)(41,44)(45,48)(46,47) involution — undirected(1,3)(2,7)(4,11)(5,9)(6,10)(8,14)(12,15)(13,16)(17,21,23,28)(18,26,22,32)(19,29,30,20)(24,31,27,25)(33,36)(34,40)(35,42)(37,44)(38,39)(41,46)(43,45)(47,48)(1,4,5,12)(2,8,6,13)(3,11,9,15)(7,14,10,16)(17,22,23,18)(19,27,30,24)(20,31,29,25)(21,32,28,26)(33,37,38,47)(34,41,42,45)(35,43,40,46)(36,44,39,48)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.