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