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