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