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