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