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