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