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