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