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