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