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