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