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)(38,44)(41,46)(43,45)(47,48) 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)(21,35,37,47,38,30,45,46)(26,42,36,48,43,39,44,41)(1,3,6,13)(2,7,9,15)(4,12,5,11)(8,16,14,10)(17,20)(18,25)(19,23)(21,35)(22,32)(24,29)(26,41)(27,40)(28,33)(30,38)(31,34)(36,42)(37,47)(39,44)(43,48)(45,46)(17,21,22,37,23,38,34,45)(18,26,27,36,28,43,29,44)(19,30,31,46,20,35,32,47)(24,39,25,41,40,42,33,48)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.