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