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