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